Enhanced traceability for optimum chain-of-custody

• All tubes labeled with a unique ID number in barcode and alphanumeric format.
• Only Markes tubes can be fitted with TubeTAG™ to track tube history
• Automatically ensure full chain of custody from field to lab, and back
• NO human errors OR expensive reworks
• Improve workflow recording:
  • - Sampling start/end time and date
  • - Sampling location
  • - Number of analytical cycles

• Very effective seal for tubes on TD autosamplers
• Prevent artefact ingress and loss of analytes
• DiffLok caps allow gas to flow when pressure is applied
• No capping/uncapping necessary
• DiffLok caps provide a better seal than traditional TD push-on caps

Easy-to-use breath sampler for cost-effective biological
monitoring

The Bio-VOC is a simple, disposable device for collecting volatile
organic compounds (VOCs) in breath samples and transferring them
to sorbent tubes, for subsequent analysis by thermal desorption(TD).

Requiring minimal training, the Bio-VOC is ideal for any application
Where the presence of medically qualified staff would not be practical
- such as large-scale studies of factory workers or the public.

Product highlights

• Non-invasive and easy to use - no need for medically qualified staff.
• Collects only the alveolar air - the most reliable indicator of VOC concentrations in the blood.
• Can be used multiple times for one participant within a single sampling session.
• Simple manual transfer of collected breath to TD sorbent tubes.

Robust and easy-to-use soil gas sampler

The VOC-Mole is a stainless steel assembly that is inserted into
the ground, allowing soil gas to be sampled onto a sorbent
tube, for analysis by thermal desorption (TD)–GC.

The VOC-Mole is simple to use and easy to transport, and
perfect for any analyst wishing to monitor levels of volatile
organic compounds in soil.

Product highlights

• Organic pollutants pass through holes in the hollow tube and are collected on a sorbent tube.
• Probe can be left in the ground for long periods.
• Compatible with diffusive and pumped sampling.
• Use of multiple VOC-Moles in a grid arrangement allows the creation of VOC maps.
• Special cap prevents ingress of water, wildlife and soil debris.
• Various pack sizes and probe lengths available.

Grab Sampler(Easy-VOC^TM)

Simple, catch-all sampling solution for VOCs in air or gas

Product highlights

• Easy grab-sampling onto sorbent tubes.
• Robust and intuitive, with no pump to calibrate.
• 50-500 mL volumes.
• More versatile alternative to canister sampling - compatible with n-C₃ to n-C₃₂.
• Accommodates ¼" and 6 mm o.d. sorbent tubes.

Calibration Solution Loading Rig

Markes International’s Calibration Solution Loading Rig (CSLR^TM) has been
specifically designed for loading sorbent tubes with gas- or liquid-phase
standards. With an unheated injector port, it also complies with key TD
standard methods such as ISO 16017. US EPA Method TO-17 and ASTM
D6196.

Operation is simple - with the packed sorbent tube connected to the CSLR,
the standard is injected through the septum, allowing the compounds to
be swept onto the tube in a stream of carrier gas.

Issued on 29 September 2015, US EPA Method 325 is required to comply with the new US federal regulation CFR 40. Monitoring of volatile organic compounds (VOCs) around the boundary of refineries requires 2-week passive sampling and TD–GC (or GC–MS) analysis.

Although benzene is the primary target compound of Method 325, the sampling and analysis methodology can also be used to determine other VOCs, including other hazardous airpollutants (HAPs) without further method development.

All petroleum refineries seeking compliance with US EPA regulations, together with federal, regional and independent test laboratories, have until 2018 to adhere to Method 325.

Why choose Markes for your Method 325 refinery perimeter monitoring solution?

• - Complete sampling and analytical package & full range of accessories available.
• - TD instrumentation fully compliant with Method 325 and compatible with any GC or GC–MS system.
• - Renowned experts in both sampling & analysis of VOCs.
• - Reduced risk of litigation through complete chain of custody.

HiSorb™ is an innovative, labour-saving sampling system for
the analysis of volatile and semi-volatile organic compounds
(VOCs and SVOCs) in liquids and solids by TD–GC–MS.

Extending the capability of thermal desorption (TD), HiSorb
probes and accessories are ideal for trace-level component
characterisation, aroma profiling, quality control and
advanced research across a wide range of applications.

Who uses HiSorb?

• - Existing thermal desorption users wishing to extend their capabilities to extraction from liquids.
• - Users of headspace, solid-phase micro-extraction (SPME) or liquid extraction wanting to enhance the characterisation of their samples or obtain complementary information​.

Why use HiSorb?

HiSorb probes extract VOCs and SVOCs from liquids most
effectively when the headspace vial is gently agitated and
heated. Markes offers the HiSorb Agitator specially for this
purpose.

Detection of taint and odour compounds in water by immersive sorptive extraction.